Adjustable spring bed-bottom



(No Model.)

H. A. SCOTT. Adjustable Spring Bed Bottom.

Patenteq March 15,1881.

INVENTOR wmmssns:

ATTORNEYS.

N-PETEHS. PHOTDVLITHDGRAPNER. WASHINGTON. 0.6,

UNITED STATES PATENT OFFICE.

HENRY A. SCOTT, OF ATHOL, MASSACHUSETTS.

ADJUSTABLE SPRING BED-BO TTOM.

SPECIFICATION forming part of Letters Patent No. 238,974, dated March15, 1881. Application filed October 13, 1880. (No model.)

To all whom it may concern:

Be it known thatI, HENRY ALFREDSOOTT, of Athol, in the county ofWorcester and State of Massachusetts, have invented anew and usefulImprovementin Adjustable Spring Bed-Bottoms, of which the following is aspecification.

Figure 1 is an under-side View, partly in section, of the improvement.Fig. 2 is a sectional elevation taken through the line 00 an, Fig.1.Fig. 3 is a perspective view of one of the bearings for the worm andworm-wheel. Fig. 4 is a top-plan view.

Similar letters of reference indicate corresponding parts.

The object of this invention is to furnish invalid-bed bottoms havinghead and foot sections capable of easy adjustment in horizontal orinclined positions, which may be used with and easily removed fromordinary bedsteads and be easy of transportation.

The invention consists in combining with the frame of the bed-bottom andwith the hinged section frames at the head and foot of the bed-bottom,having cross-shafts, provided with rigid arms and worin-gearings foroperating the shafts, whereby the hinged sections can be convenientlyraised and lowered, as will be hereinafter fully described.

A represents the frame of the bed-bottom,

which may be placed Within the frame of an ordinary bedstead, two orthree of the slats at the foot of the bed-bottom adapted to be removedto allow the foot-section of the bedbottom to be swung down whenrequired.

At the head of the bed'bottom the upper part of the side and end bars ofthe frame A are cut away, and in the space thus formed is fitted asection of a frame, B, the inner ends of the side bars of which arehinged to the shoulders of the side bars of the frame A, as shown inFig. 2.

Within the frame A, at the foot of the bed-bottom, is placed a sectionof a frame, O, which is hinged at the ends of its side bars to blocks D,attached to the inner sides of the side bars of the frame A, so that thesection G can be swung down into an inclined position.

To the side bars of the frame A, at the inner ends of the side bars ofthe sections B G, or to bearings E, attached to the said side bars, arepivotedthe ends of two shafts, F, to which, at the inner side of one ofthe side bars of the frame A, is attached a wormwheel, G, the teeth ofwhich mesh into the threads of the worms H, pivoted to bearings E,attached to the side bars of the frame A, or to other suitable bearings.The ends of the upper journals of the Worms Hare squared to receive a.key or wrench for turning the said worms H.

To each of the shafts F are rigidly attached arms I, which slide throughkeepers J, attached to the frames B O, or to the crossbars attached tothe said frames B C. With this construction, when either of the shaftsF'is turned, by turning the worurgearing H G the arms I will raise orlower the one of the frame-sections with which they are connected,according to the'direction in which the said worm-gearing is turned.With this construction the change of position Wlll. be made so graduallyand steadily that the invalid will receive no annoyance or pain;

To the lower edges of the middle parts of the side bars of the frame A,and to thelower edges of the side bars of the frame-sections B (J, areattached cross-bars K, to which the lower ends of the spiral springs Lare attached.

The upper ends of the spiral springs L are attached to the ticking,canvas, metal. straps, or other connection upon which the bedding rests.

1 am aware that it is not new to make bedbottoms having head and footsections capable' of adjustment but such bed-bottoms are cumbersome anddifficult of transportation; but 1 am not aware that bed-bottoms adaptedto be used in connection with and easily removed from any ordinarybedstead, as well as possessing the advantage of being conveniently.transported, have been so constructed.

What I claim is- ,A bed-bottom provided with hinged adjustable head andfoot sections and adapted to be used with and easily removed from anordinary bedstead, consisting of the frame A, sectional frames B and O,thelatterhinged to block 1), slats K, springs L, bearings E, worms H,shafts F, worm-gears G, fixed arms I, and keepers J, all arranged as andfor the purposes specified.

HENRY A. SCOTT.

Witnesses:

ANDREW J. HAMILTON, SUSAN J. STAFFORD.

